Preparation method for antireflection film of solar cell

A technology for solar cells and anti-reflection films, applied in the field of solar cells, can solve the problems of poor adhesion, insignificant improvement of the light transmittance of silicon dioxide anti-reflection films, affecting the anti-reflection performance of thin films, etc. Light rate, simple process effect

Inactive Publication Date: 2013-04-03
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to use the sol-gel method to prepare the silica anti-reflection film. The transmittance of the silica anti-reflection film prepared by this method does not increase significantly, and the transmittance of sunlight is below 93%, which is only better than that without anti-reflection coat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The silica sol is synthesized by the sol-gel method and aged at room temperature for 5-8 days. Take 10 ml of silica sol and 10 ml of polystyrene balls, mix them thoroughly under magnetic stirring, and keep them at room temperature. Aging for 8-10 days. The prepared mixed sol was spin-coated on the embossed glass for 3 layers, dried at 100°C for five minutes, put into a tempering furnace and tempered at 500°C for 2 hours, and cooled at room temperature to obtain a silica anti-reflection film .

Embodiment 2

[0020] The silica sol is synthesized by the sol-gel method and aged at room temperature for 5-8 days. Take 10 ml of silica sol and 20 ml of polystyrene balls, mix them thoroughly under magnetic stirring, and keep them at room temperature. Aging for 8-10 days. The prepared mixed sol was spin-coated on the embossed glass for 4 layers, dried at 120°C for five minutes, put in a tempering furnace and tempered at 400°C for 2 hours, and cooled at room temperature to obtain a silica anti-reflection film .

Embodiment 3

[0022] The silica sol is synthesized by the sol-gel method and aged at room temperature for 5-8 days. Take 15 ml of silica sol and 20 ml of polystyrene balls, mix them thoroughly under magnetic stirring, and keep them at room temperature. Aging for 8-10 days. Spin-coat the configured mixed sol on the embossed glass for 5 layers, dry it at 150℃ for five minutes, put it in a tempering furnace and temper at 500℃ for 2 hours, and cool at room temperature to obtain a silica anti-reflection film .

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Abstract

The invention discloses a preparation method for an antireflection film of a solar cell. The preparation method comprises the following steps of forming a layered structure on substrate patterned glass by means of electrostatic adsorption effects of silica and a polystyrene sphere template; and removing the polystyrene sphere template by drying and tempering, and thus obtaining the silica antireflection film. The invention provides the preparation method for the antireflection film of the solar cell, which is low in cost and simple in process. A silica- polystyrene structure is formed due to the electrostatic adsorption between the silica and polystyrene spheres, and the silica is difficult to combine with moisture in air because of the hydrophobicity of the polystyrene spheres, so that the adhesion between the film and a substrate is improved. The silica film prepared by the preparation method has a porous structure, and the refractive index approaches to desirable refractive index, so that the light transmittance is enhanced and can go up to 95.4 percent. The photoelectric conversion efficiency of the solar cell is improved by increasing the light transmittance, and a certain promotion effect of popularizing the wide application of the solar cell is achieved.

Description

Technical field [0001] The invention relates to the field of solar cells, in particular to a method for preparing an anti-reflection film of a solar cell. Background technique [0002] Related research shows that the world's energy reserves such as coal and petroleum resources can only be used by humans for 50 to 70 years. Therefore, human beings are focusing more and more attention on the theoretically inexhaustible solar energy, making it one of the hot topics of research in recent decades. However, at present, how to narrow the gap between actual photoelectric conversion efficiency and theoretical photoelectric conversion efficiency and further improve the photoelectric conversion efficiency of solar cells is still a difficult problem facing mankind. [0003] The anti-reflection film is plated on the glass substrate of the solar cell in order to increase the transmittance of sunlight and increase the utilization rate of sunlight, so as to finally achieve the purpose of improvin...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 彭寿王芸孙人杰王萍萍金良茂甘治平
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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